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Finding the Fourth Proportional to 60,561.12, 90,919.44 and 51,385.44

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Solution

The fourth proportional to 60,561.12, 90,919.44 and 51,385.44 is: 77,144.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,561.12 : 90,919.44 = 51,385.44 : x
  2. Step 2: Convert to fraction form
    60,561.12/90,919.44 = 51,385.44/x
  3. Step 3: Cross multiply
    60,561.12x = 90,919.44 × 51,385.44
  4. Step 4: Simplify right side
    60,561.12x = 4,671,935,428.95
  5. Step 5: Solve for x
    x = 4,671,935,428.95/60,561.12
  6. Step 6: Final answer
    x = 77,144.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.